| 摘要: |
| 采用试验与数值手段研究周向凹槽槽数变化对压气机性能的影响,在一亚声速转子上进行4种不同槽数的周向槽处理机匣试验。试验结果表明,4种不同槽数的机匣处理都提高压气机的失速裕度,在相同槽宽下开槽数最多的扩稳效果最好,开槽数目最少的扩稳效果最次。数值计算所获得总性能与试验结果符合良好。通过详细地分析凹槽槽数变化对压气机顶部区域流场结构的影响,揭示了周向槽槽数变化对压气机性能影响的流动机理。 |
| 关键词: 压气机 机匣处理 槽数+ 实验 数值仿真 |
| DOI： |
| 分类号:V231.3 |
| 基金项目:航空科学基金(05C53016);国家自然科学基金(50506026) |
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| Effects of grooved number of grooved casing treatment on stall margin |
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CHU Wu-Li1, ZHANG Hao-guang2, WU Yan-hui3, DANG Chun-ning4
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1.School of Power and Energy,Northwestern Polytechnical Univ.,Xi’an 710072,China;2.School of Power and Energy,Northwestern Polytechnical Univ.,Xi’an 710073,China;3.School of Power and Energy,Northwestern Polytechnical Univ.,Xi’an 710074,China;4.The Second Artillery Engineering Coll.,Xi’an 710025,China
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| Abstract: |
| Experimental and numerical investigations were conducted to study the effects of grooved number of circumferential grooved casing treatment on a compressor performance.Four kinds of grooved numbers of circumferential grooved casing treatment were tested in a subsonic rotor.Experimental results show all grooved numbers of groove casing treatment increase the stall margin of the compressor.The maximum grooved number has the best effect in increasing the stable operating range.The least grooved number has inferior effect in improving the stable operating range.The calculated overall performance lines showed good agreement with the experiments.The fundamental flow mechanism was obtained by detailed analyzing the flow at the blade tip,which reveals the effects of grooved width of circumferential grooved casing treatment on compressor performance. |
| Key words: Compressor Casing treatment Grooved number+ Experiment Numerical simulation |
